I suggest to use the least protocol variations as possible, to obtain a maximum of inter- and intraindividual comparability. Only results from the same exercise testing protocol are comparable to each other.
A treadmill protocol that has been widely used for recreational runners up to olympic champions: Start at 6 km/h (4 km/h alternatively), 2 km/h increase with 3 minutes step duration up to exhaustion. Treadmill slope should be held constant at about 1.5% (depending on the type of treadmill). Important: also the slowest pace steps should be performed by running (never walking!), since walking and running have totally different efficiency characteristics.
The mentioned protocol is especially applicable to an environment with lactate testing.
Dear Alberto, no, that protocol does not have a personal name as "Bruce" or something. Nevertheless it has been used in numerous publications - not only these:
1. Prettin S, Roecker K, Ruehl S, Deibert P, Schumacher Y, Hirschmüller A, Dickhuth H. Changes in blood lactate concentrations during different treadmill exercise test protocols. J Sports Med Phys Fitness 2011 Jun;51(2):179–184.
2. Roecker K, Niess AM, Horstmann T, Striegel H, Mayer F, Dickhuth H-H. Heart rate prescriptions from performance and anthropometrical characteristics. Med Sci Sports Exerc 2002 May;34(5):881–887.
3. Roecker K, Schotte O, Niess AM, Horstmann T, Dickhuth H-H. Predicting competition performance in long-distance running by means of a treadmill test. Med Sci Sports Exerc 1998 Oct;30(10):1552–1557.
4. Roecker K, Striegel H, Dickhuth H-H. Heart-rate recommendations: transfer between running and cycling exercise? Int J Sports Med 2003 Apr;24(3):173–178.
If you want to measure maximal heart rate or maximal oxygen uptake you should find information about incremental test until exhaustion (Kai decribed this test, but slope angle should be 0% or 1%:
Jones AM, Doust JH: A 1% treadmill grade most accurately reflects the energetic cost of outdoor running. J. Sports Sci. 14, 321–327 (1996)
During this test the work load can be increased by speed or/and slope angle increasing.
I agree with Kai and Bojan. While selecting the testing protocol we have to consider the demographic details, level of game they participates, demand of the game in which the athletes are participating.
Here is some more sources you can go through:
Wilmore JH and Costill DL. (2005) Physiology of Sport and Exercise: 3rd Edition. Champaign, IL: Human Kinetics.
Vivian H. Heyward, Advance Fitness Assessment & Exercise Prescription, 3rd Edition, The Cooper Institute for Aerobics Research, Dallas TX, 1998
ACSM's Resource Manual for Guidelines for Exercise Testing and Prescription
David P. Swain, ACSM, Clinton A. Brawner 2012
American Acsm's Guidelines for Exercise Testing and Prescription, 8th Ed
Exercise Testing and Prescription a health related approach by David C Nieman 2012